Long before humans built cities or wrote words, our ancestors may have faced a hidden threat that shaped who we became. Scientists studying ancient teeth found that early humans, great apes, and even ...

I/ATLAS, a mysterious interstellar object racing toward the Sun, is baffling scientists with its speed and origin. Some ...

Hiking through the forests provides different mental health benefits than moving through mountains or near water. Learn how ...

Except for one key aspect, the setup is a familiar one in medicine: An expert diagnostician presents a particularly challenging case to a roomful of colleagues, carefully walking them through the ...